34 
Transactions Texas Academy of Science. 
The adrenals (Ad.) are present on each side as golden yellow bodies 
imbedded in the windings of the spermaducts near the point where 
the collecting tnbnles come out from the testes. 
(b) female. (PI. II., fig. 5.) 
The female urogenital system is far simpler than had been antici- 
pated. The specimen dissected was a fresh alcoholic one, measuring 
about 6.5cm. from the tip of the snout to the vent. 
The ovaries (Ov.) are small and placed exactly symmetrically in 
the body cavity, and are supported as usual by two folds of peri- 
toneum. 
The oviducts were extremely simple. Each begins anteriorly with 
a slit like ostium (Os.) and continues posteriorly with a few convo- 
lutions in the region of the ovaries. The two posterior ends join be- 
fore opening into the cloaca. 
The ureters (Ur.) are practically the same as those of the male. 
They open into the .vagina-like pouch formed by the joining of the 
two oviducts. 
The kidneys (K.) are also practically the same as those found in 
the male, excepting that instead of entirely ceasing in front of the 
anal aperture, they are continued posterior to the anus as narrow 
strips of connective tissue, which are applied to each other just as 
the posterior ends of the kidneys are in Holhrookia , Sceloporus, etc. 
Thus in this form we can still say the kidneys lie entirely in front of 
the anus, as that part which does extend posterior to the anus con- 
tains almost no kidney substance proper. 
II. CONCLUSIONS. 
A main object of this study was to make a contribution to the ques- 
tion of how much value the comparison of the differences in the inter- > 
nal urogenital organs would have in determining genetic relationship. 
Apriori one might consider these organs to show considerable value of 
this kind. For, in the first place, this is one of the oldest organ sys- 
tems in Vertebrates, in that all members of this group possess ova- 
ries and testes and kidneys. And in the second place these internal 
organs would not so readily become modified by external conditions 
as do certain other structures given more prominence in classifica- 
tion. Cope has drawn attention to the copulatory organs of the male, 
and has laid considerable stress upon them as guides of descent, par- 
ticularly in the case of the Ophidia. But as yet no one appears to 
have compared the internal organs of lizards with this object in view. 
We may say that the germ cells are really the earliest cells of the 
organism, in that some of them, by loss of characters, become somatic 
